France · Vendée
Water temperature at Le Grand Vieil
Pleasant for swimming
Updated hourly from the live marine forecast. See the 12-month typical range and, where available, real measured readings further down the page.
7-day outlook
7-day water temperature forecast from Open-Meteo, refreshed hourly.
Water temperature
Next 7 days, °C
View as table
| Day | Water temp (°C) |
|---|---|
| Wed 2 | 21.4 |
| Thu 3 | 21.7 |
| Fri 4 | 21.9 |
| Sat 5 | 22.5 |
| Sun 6 | 22.5 |
| Mon 7 | 22.6 |
| Tue 8 | 22.4 |
Water temperature by month
Modeled climatology derived from latitude and season.
Typical vs. measured water temperature
12-month view, °C — modeled line vs. measured sample averages
View as table
| Month | Modeled (°C) | Measured avg. (°C) |
|---|---|---|
| Jan | 15 | — |
| Feb | 14 | — |
| Mar | 15 | — |
| Apr | 17 | — |
| May | 19 | — |
| Jun | 22 | — |
| Jul | 23 | — |
| Aug | 24 | — |
| Sep | 24 | — |
| Oct | 22 | — |
| Nov | 20 | — |
| Dec | 17 | — |
No measured in-season water temperature has been published for Le Grand Vieil yet — the chart above shows the modeled climatology only. Some countries (Croatia, via IZOR) also record the water temperature at each official water sample; check the water quality page for this beach's sampling status.
Frequently asked questions
What's the current water temperature at Le Grand Vieil?
Right now the water at Le Grand Vieil is around 21°C, per the latest hourly update. Check the 7-day chart above for the trend, or the monthly chart below for how that compares to the seasonal norm. That's the reading right off Vendée.
When does Le Grand Vieil have the warmest water?
July–September, when the modeled water temperature is typically above 22°C — widely considered comfortably warm for swimming. August usually runs warmest. That applies to the water around Vendée.
Is the water temperature chart above measured or estimated?
Not yet for Le Grand Vieil — the chart above shows a modeled estimate derived from latitude and season, not a measured average. Some countries (Croatia, via IZOR) also publish the water temperature recorded at each official water sample; when that data exists for a beach it's plotted alongside the modeled curve.